Home / 5,321,921.40-7,981,326.90-1,909,812.60

Finding the Fourth Proportional to 5,321,921.40, 7,981,326.90 and 1,909,812.60

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Solution

The fourth proportional to 5,321,921.40, 7,981,326.90 and 1,909,812.60 is: 2,864,160.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321,921.40 : 7,981,326.90 = 1,909,812.60 : x
  2. Step 2: Convert to fraction form
    5,321,921.40/7,981,326.90 = 1,909,812.60/x
  3. Step 3: Cross multiply
    5,321,921.40x = 7,981,326.90 × 1,909,812.60
  4. Step 4: Simplify right side
    5,321,921.40x = 15,242,838,678,338.94
  5. Step 5: Solve for x
    x = 15,242,838,678,338.94/5,321,921.40
  6. Step 6: Final answer
    x = 2,864,160.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.